at 25 celsius the vapor pressure of hexane is 148 torr.?

calculate the vapor pressure at 50 celsius given deltaH vap. 30.1 KJ/mol

2007-01-13 07:46:41 · 1 answers · asked by mibrasilmania 1 in Science & Mathematics ➔ Chemistry

1 answers

Use the Clausius-Clapeyron equation:

ln (P2/P1) = Hvap/R * (1/T1 - 1/T2)
ln (P2/148) = 30100/8.314 (1/298 - 1/323)
ln (P2/148) = 0.94
P2/148 = 2.56
P2 = 379 torr

2007-01-13 08:19:57 · answer #1 · answered by TheOnlyBeldin 7 · 0⤊ 0⤋

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